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Thread: Internet Runs Slow with Router but not Modem

  1. #1

    Internet Runs Slow with Router but not Modem

    Hey all, Just like to say thanks for this forum, it's a great resource.

    I stumbled upon this thread

    http://forums.speedguide.net/showthread.php?t=220227

    And I have pretty much the same problem. My internet runs slowly when connected to the router, but fine when connected directly to the Modem.

    I read in the thread that you got the other guy to post a report from this site http://miranda.ctd.anl.gov:7123/ So I will as well.

    Code:
    TCP/Web100 Network Diagnostic Tool v5.5.1
    click START to begin
    Connected to: miranda.ctd.anl.gov  --  Using IPv4 address
    Checking for Middleboxes . . . . . . . . . . . . . . . . . .  Done
    checking for firewalls . . . . . . . . . . . . . . . . . . .  Done
    running 10s outbound test (client-to-server [C2S]) . . . . . 966.0kb/s
    running 10s inbound test (server-to-client [S2C]) . . . . . . 1.76Mb/s
    The slowest link in the end-to-end path is a 10 Mbps Ethernet subnet
    
    /\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\
    
    WEB100 Enabled Statistics:
    Checking for Middleboxes . . . . . . . . . . . . . . . . . .  Done
    checking for firewalls . . . . . . . . . . . . . . . . . . .  Done
    running 10s outbound test (client-to-server [C2S]) . . . . . 966.0kb/s
    running 10s inbound test (server-to-client [S2C]) . . . . . . 1.76Mb/s
    
    	------  Client System Details  ------
    OS data: Name = Windows XP, Architecture = x86, Version = 5.1
    Java data: Vendor = Sun Microsystems Inc., Version = 1.6.0_02
    
    	------  Web100 Detailed Analysis  ------
    10 Mbps Ethernet link found.
    Link set to Full Duplex mode
    No network congestion discovered.
    Good network cable(s) found
    Normal duplex operation found.
    
    Web100 reports the Round trip time = 66.33 msec; the Packet size = 1380 Bytes; and 
    There were 7 packets retransmitted, 197 duplicate acks received, and 21 SACK blocks received
    The connection stalled 2 times due to packet loss
    The connection was idle 0.53 seconds (5.30%) of the time
    C2S throughput test: Packet queuing detected: 0.76%
    S2C throughput test: Packet queuing detected: 5.29%
    This connection is receiver limited 73.9% of the time.
      Increasing the the client's receive buffer (16.0 KB) will improve performance
    This connection is sender limited 1.71% of the time.
    This connection is network limited 24.39% of the time.
    
    Web100 reports TCP negotiated the optional Performance Settings to: 
    RFC 2018 Selective Acknowledgment: ON
    RFC 896 Nagle Algorithm: ON
    RFC 3168 Explicit Congestion Notification: OFF
    RFC 1323 Time Stamping: OFF
    RFC 1323 Window Scaling: OFF
    
    Server 'miranda.ctd.anl.gov' is probably behind a firewall. [Connection to the ephemeral port failed]
    Client is probably behind a firewall. [Connection to the ephemeral port failed]
    Information: Network Middlebox is modifying MSS variable
    Server IP addresses are preserved End-to-End
    Information: Network Address Translation (NAT) box is modifying the Client's IP address
    	Server says [24.224.202.13] but Client says [192.168.0.2]
    I'm using a Netgear MR814 v3 Router and a Motorola SB5101 Modem with Windows XP Pro as my OS.

    Thanks for your time,
    H

  2. #2
    fem the retarded rabbit mccoffee's Avatar
    Join Date
    Nov 2001
    Location
    Cleveland, Ohio, United States
    Posts
    13,382
    Try upgrading the firmware on the router if there is a wan link duplex speed change it to 100full if it doesn't have a wan port speed it could be that wan port is only 10mb not 100.
    Comptia a+ n+

  3. #3
    Elite Member trogers's Avatar
    Join Date
    Jan 2005
    Location
    Bangkok, Thailand
    Posts
    12,323
    The connection stalled 2 times due to packet loss
    Probably 2 problems:

    Untweaked TCP settings (MSS is at only 1380), and

    Electircal interference on the signal device(s)
    "Contentment is not the fulfillment of what you want, but is the realisation of how much you already have" - anon

  4. #4
    Junior Member
    Join Date
    Aug 2008
    Posts
    9

    Thumbs up

    Hello,

    I guess it's more to do with the Router firewall of Firmware.

    Regards

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